Chart alert: USD/JPY major bearish reversal below 200-day MA

• JPY strength accelerates: USD/JPY fell 0.91% on 2 September and extended its decline by another 1.35% on 3 September, a move comparable with the sharp decline seen around the July US-Japan FX intervention.
• Fundamentals are turning more yen-supportive: US Treasury Secretary Scott Bessent’s support for decisive Japanese action, BoJ policymaker Hajime Takata’s discussion of larger or consecutive rate hikes, and renewed intervention risk have strengthened the bullish JPY narrative.
• 200-day MA breakdown damages USD/JPY’s uptrend: The pair has broken below its 200-day MA and erased its gains since the 3 August low. Unless 158.04/50 is reclaimed, downside risk remains towards 155.03 and 153.84.

In the past 40 hours, the Japanese yen has strengthened dramatically against the US dollar, a trend that began on Wednesday, 2 September 2026, when USD/JPY declined by 0.91%.

In follow-through today (Wednesday, 3 September 2026), USD/JPY has extended its losses by a further 1.35% at the time of writing (see Fig. 1).

The current decline of the USD/JPY is almost on par with the daily loss of 1.32% recorded on 31 July 2026, where Japan and the US confirmed their first joint FX intervention in around 28 years following the Japanese government’s sole intervention a day earlier on 30 July 2026, in bid to stall the steep pace of JPY weakening where USD/JPY soared to the 164 handle on 23 July 2026, its highest level in about 40 years.

Today’s swift decline in USD/JPY smells like FX intervention, with no clear catalyst in relevant economic data releases.

However, so far, there are no official press releases from Japan or the US confirming any form of intervention, and no “according to sources” reporting from media outlets.

Here are the three fundamental developments to reinforce the current bout of JPY strength:

• US Treasury Secretary Scott Bessent expressed support for decisive Japanese action to address yen weakness to Bank of Japan (BoJ) Governor Ueda during the G-20 finance and central bank leaders meeting last weekend, according to a readout released by the US Treasury Department on Tuesday, 1 September 2026. This reduces the political constraint on further BoJ tightening and suggests Washington is increasingly comfortable with a stronger yen.
• BOJ board member Hajime Takata said policymakers should consider options beyond the conventional 25-basis-point rate increase, including larger or consecutive hikes, said in a news conference on Wednesday, 2 September 2026. While Takata remains one of the BoJ’s most hawkish members, his comments increase the risk that the central bank accelerates its tightening cycle.
• The speed of the yen’s appreciation placed traders on high alert for another round of intervention. Although there was no immediate confirmation of official yen buying, the threat of action creates an increasingly asymmetric risk around the psychologically important 160.00 region.

Let’s now unpack the short-term trajectory (1 to 3 days) of the USD/JPY from a technical analysis perspective.

Today’s swift bearish reaction in USD/JPY comes right after the retest of a key pullback resistance level at around 160.30, a former major ascending trendline support from the 22 April 2025 low (see Fig. 2).

Today’s decline in USD/JPY has sent it below the key 200-day moving average and erased all its gains from the prior one month, since the 3 August 2026 low of 155.23 (see Fig. 2).

The current steep intraday decline in USD/JPY has pushed the hourly RSI momentum indicator into oversold territory, but there is no clear bullish divergence at this juncture (see Fig. 3).

Hence, USD/JPY may now form a potential minor dead cat bounce at the near-term support of 156.32, towards the near-term resistance of 157.30.

Watch the 158.04/50 key short-term pivotal resistance (also the 200-day moving average). If this zone is not surpassed to the upside, the odds are skewed towards a new potential bearish impulsive down-move sequence next, which could expose the next intermediate supports at 155.03 and 153.84 in the first step (see Fig. 3).

On the other hand, a clearance and an hourly close above 158.50 would invalidate the bearish scenario, triggering a squeeze up to retest the next intermediate resistance at 159.18/54 (20-day moving average) (see Fig. 3).